Mikoi appears (sings/talks) in the following miscellaneous CDs.

2010.12.22	Milky Show Time (LACA-15083)	Song
2011.04.06	Colourful Garden (LACA-15110)	Song
2011.08.24	To-gather (LACA-15139)	Song
2012.05.09	Bloooom! (LACA-15197)	Song
2012.11.30	D.C.III Drama CD Collection vol.3 (CIRCUS-0320)	Talk
2012.12.28	D.C.III Drama CD Collection vol.4 (CIRCUS-0321)	Song/Talk
2013.03.06	Card Fight Vanguard Best Album (LACA-15275)	Song {Milky Holmes}
2013.04.24	D.C.III -Da Capo III- Original Sound Tracks and Image Songs (LACA-9285)	Song
2017.06.07	Japari Cafe (VICL-64787)	Song/Talk

Mikoi appears (sings/talks) in the following CD singles.

2010.06.23	Ameagari no Mirai (LACM-4724)	Song
2010.10.27	Seikai ha Hitotsu! Janai! (LACM-4754)	Song
2011.09.10	Futari ha Tomodachi (LZM-2047)	Song
2012.01.25	Nazo Nazo Happiness (LACM-4895)	Song
2012.02.22	Nakimushi Treasures (LACM-4909)	Song
2012.08.29	Prologue ha Ashitairo (LACM-4985)	song
2012.10.24	Kimi no Naka no Watashi (LACM-14014)	Song
2013.05.24	Yume Yume Express (PCCG-90101)	Song
2013.09.04	Glory Growing Days (PCCG-90104)	Song
2014.04.30	Bouken Milkyroad! (PCCG-90123)	Song
2014.11.26	Overdrive! (PCCG-90134)	Song
2017.02.08	Youkoso Japari Park he (VICL-37248)	Song
2017.02.08	Youkoso Japari Park he (VIZL-1108)	Song/Talk
2018.10.17	Mainichi Climax (PCCG-90174)	Song
2018.11.21	Don't Be Afraid [CD+BD] (BRMM-10136)	Song
2022.08.17	Teppen Tengoku (XNDD-10)	Song